Chaeles h



(No Model.)

C. H. AMES.

sAsH BALANCE.

A Lm MMU I 2 Patented Sept. 20, 1887 N. Pneus. wmmmmpm, wnmngm D. cA

ArnNT Finca.

CHARLES II. AMES, OF BUFFALO, NEI/V YORK, ASSIGNOR, BY DIRECT AND MESNEASSIGNMENTS, TO DE VITT C. VELCH AND JAMES NV. TIFFT,

BOTH OF SAME PLACE.

SASH=BALANCE.

SPECIFICATION forming part of Letters Patent blo-370,302, datedSeptember 20, 1887.

Application filed April 26, 1887. Serial No. 236,154.

State of New York, have invented a new and useful Improvement in SashBalances, of

which the following is a specification.

This invention relates to an improvement in that class of sash-balanceswhich are composed of a spring pulley or drum connected with the ro sashby a cord, and which are provided with a ratchet-and-pawl mechanismwhereby the tension of the spring-pulley can be regulated.

The object of my invention is to produce a simple sash-balance of thischaracter; and the invention consists of the improvement which will behereinafter fully describcd,and pointed out in the claim.

In the accompanying drawings, Figure l represents a verticallongitudinal section of a 2o window frame provided with my improvedsash-balance. Fig. 2 represents a front elevation of the sash-balance.Fig. 3 is a vertical section, on an enlarged scale, in line :v x,Fig. 1. Fig. 4 is an end elevation of the ratchet and drum, showing thedrum partly in section and showing the pawl and shaft in a section takeninline '1y y, Fig. 3, and the casing in a section in line z. z, Fig. 3.Fig. 5 is a top plan View of the slidingpawl and the ratchet-wheel.

Like letters of reference refer to like parts in the several figures.

A represents the window casing or jamb, B the upper sash, and B thelower sash, which slide in suitable ways in the window-casing; and C isthe lintel or top cross.- piece of the window-frame.

D represents the sash balance, arranged in one of the upper corners ofthe window-frame and inclosed by a suitable casing, D. The lat- 40 teris formed with perforated lugs-or ears d, which are secured by screws dto the lintel and window-jamb.

E E represent the pulleys or drums, which are arranged in the casing Dand upon which the sash-cords f are wound. The latter are preferablysecured to the pulleys E by passing the end of the cord through anopening in the rim of the pulley and forming a knot on the end of thecord on the inner side of the pulley,

5o as shown in Fig. 4. The drums or pulleys E (No model.)

E are each provided with marginal flanges e, and are mounted upon ahorizontal shaft or spindle, g, which is j ournaled in suitable bearingsformed in the casing D. The outer end of the spindle g passes throughthe casing D', and is made square, so that it can be turned by asuitable wrench or key, g. (Shown by dotted lines in Fig.f3.) The endplate, D, of the casing D' is made detachable from thelbody of thecasing and is secured to the latter by screws d2.

II represents the coiled springs, arranged within the pulleys E E, andeach secured with .its inner end to the shaft or spindle g and with Vtheend plate of the casing D', and is provided with acontracted neck orshank,j,which projects through the slot 7c and terminates in a button orlingerpieoe, Z,whereby the pawl can be raised. The button Z is madelarger than the width of the slot 7c, so as to retain the pawl in theslot. The pawl j is introduced into the slot 7c from the inner side ofthe casing D', and the upper end of the slot is formed with anenlargement, 7o', for the passage of the button Z.

In adjusting my improved sash-balance the shaft g is turned by the key guntil the springs H have received sufficient tension to balance thesash. If it is desired to relax the springs H, the pawl j is lifted bymeans of the button Z and the shaft g allowed to move backwardly untilthe springs have been given the proper'` 9o tension. The pawlj is thenpermitted to fall in engagement with the ratchetwheel I, whereby theshaft g is held against'turning and the sp rings H are prevented fromunwinding.

The upper sash, B, is provided near its upper end with a rod orprojection, m, which is adapted to engage with a spring-catch, mwhen thesash is in its highest position. By this means the position of the uppersash is not af- :oo

1o sash, B, the projection mstrikes the extension p and engages With thehook n', and by pulling I I claim as my invention The combination, withthe pulley E and its Shaft g, provided with a ratchet-wheel, I, of aspring, H, connecting the pulley with the shaft, a casing, D', providedwith a vertical slot, le, having an enlargement, Z, and a loose pawl,j,sliding in said slot, and having a contracted neck, j', and an enlargedfinger-piece, Z, substantially as set forth.

Witness my hand this 12th day of April, 1887, v

CHARLESY H. AMES.

Vitnesses:

D. C. WELCH, CARL F. GEYER.

